• DocumentCode
    970865
  • Title

    Critical currents in Nb3Ge based pseudobinaries

  • Author

    Alterovitz, S. ; Woollam, John A. ; Engelhardt, John J. ; Webb, George W.

  • Author_Institution
    NASA Lewis Research Center, Cleveland, Ohio, USA
  • Volume
    15
  • Issue
    1
  • fYear
    1979
  • fDate
    1/1/1979 12:00:00 AM
  • Firstpage
    512
  • Lastpage
    515
  • Abstract
    We have prepared Nb3Ge, Nb3Ge1-xGaxand Nb3Ge1-xSnxon heated alumina substrates using CVD. Midresistive transitions were up to 21K and transition widths were as low as 0.3K. Critical currents were measured to 22 Tesla at temperatures from 4.2K to 19K. Effective upper critical fields B*c2were measured by extrapolating J\\min{c}\\max {V2} vs B data. Preliminary data show that for small Ga additions, B*c2increased above the value at x=0. Flux pinning forces vs reduced field b=B/B*c2do not obey scaling laws, which we explain as being due to inhomogeneous material having a distribution of Tcand Bc2values.
  • Keywords
    Superconducting materials; Critical current; Current measurement; Flux pinning; Magnetic field measurement; Magnetic fields; NASA; Niobium; Substrates; Superconducting materials; Temperature;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1979.1060255
  • Filename
    1060255
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=970865